SampleBlockFactory Class Reference

abstract base class with methods to produce SampleBlock objects More...

#include <SampleBlock.h>

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Classes
struct	Factory
	Global factory of per-project factories of sample blocks. More...

Public Types
using	SampleBlockIDs = std::unordered_set< SampleBlockID >
Public Types inherited from Observer::Publisher< SampleBlockCreateMessage >
using	message_type = SampleBlockCreateMessage
using	CallbackReturn = std::conditional_t< true, void, bool >
using	Callback = std::function< CallbackReturn(const SampleBlockCreateMessage &) >
	Type of functions that can be connected to the Publisher. More...

Public Member Functions
virtual	~SampleBlockFactory ()
SampleBlockPtr	Create (constSamplePtr src, size_t numsamples, sampleFormat srcformat)
SampleBlockPtr	CreateSilent (size_t numsamples, sampleFormat srcformat)
SampleBlockPtr	CreateFromXML (sampleFormat srcformat, const AttributesList &attrs)
SampleBlockPtr	CreateFromId (sampleFormat srcformat, SampleBlockID id)
virtual SampleBlockIDs	GetActiveBlockIDs ()=0
Public Member Functions inherited from Observer::Publisher< SampleBlockCreateMessage >
	Publisher (ExceptionPolicy *pPolicy=nullptr, Alloc a={})
	Constructor supporting type-erased custom allocation/deletion. More...
	Publisher (Publisher &&)=default
Publisher &	operator= (Publisher &&)=default
Subscription	Subscribe (Callback callback)
	Connect a callback to the Publisher; later-connected are called earlier. More...
Subscription	Subscribe (Object &obj, Return(Object::*callback)(Args...))
	Overload of Subscribe takes an object and pointer-to-member-function. More...

Static Public Member Functions
static SampleBlockFactoryPtr	New (AudacityProject &project)

Protected Member Functions
virtual SampleBlockPtr	DoCreate (constSamplePtr src, size_t numsamples, sampleFormat srcformat)=0
virtual SampleBlockPtr	DoCreateSilent (size_t numsamples, sampleFormat srcformat)=0
virtual SampleBlockPtr	DoCreateFromXML (sampleFormat srcformat, const AttributesList &attrs)=0
virtual SampleBlockPtr	DoCreateFromId (sampleFormat srcformat, SampleBlockID id)=0
Protected Member Functions inherited from Observer::Publisher< SampleBlockCreateMessage >
CallbackReturn	Publish (const SampleBlockCreateMessage &message)
	Send a message to connected callbacks. More...

Additional Inherited Members
Static Public Attributes inherited from Observer::Publisher< SampleBlockCreateMessage >
static constexpr bool	notifies_all

Detailed Description

abstract base class with methods to produce SampleBlock objects

Definition at line 113 of file SampleBlock.h.

Member Typedef Documentation

SampleBlockIDs

using SampleBlockFactory::SampleBlockIDs = std::unordered_set<SampleBlockID>

Definition at line 145 of file SampleBlock.h.

Constructor & Destructor Documentation

~SampleBlockFactory()

SampleBlockFactory::~SampleBlockFactory ( )

virtualdefault

Member Function Documentation

Create()

SampleBlockPtr SampleBlockFactory::Create	(	constSamplePtr	src,
		size_t	numsamples,
		sampleFormat	srcformat
	)

Definition at line 26 of file SampleBlock.cpp.

{
   auto result = DoCreate(src, numsamples, srcformat);
   if (!result)
      THROW_INCONSISTENCY_EXCEPTION;
   Publisher<SampleBlockCreateMessage>::Publish({});
   return result;
}

References DoCreate(), Observer::Publisher< SampleBlockCreateMessage >::Publish(), and THROW_INCONSISTENCY_EXCEPTION.

Referenced by anonymous_namespace{Sequence.cpp}::ShareOrCopySampleBlock().

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CreateFromId()

SampleBlockPtr SampleBlockFactory::CreateFromId	(	sampleFormat	srcformat,
		SampleBlockID	id
	)

Definition at line 59 of file SampleBlock.cpp.

{
   auto result = DoCreateFromId(srcformat, id);
   if (!result)
      THROW_INCONSISTENCY_EXCEPTION;
   Publisher<SampleBlockCreateMessage>::Publish({});
   return result;
}

References DoCreateFromId(), Observer::Publisher< SampleBlockCreateMessage >::Publish(), and THROW_INCONSISTENCY_EXCEPTION.

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CreateFromXML()

SampleBlockPtr SampleBlockFactory::CreateFromXML	(	sampleFormat	srcformat,
		const AttributesList &	attrs
	)

Definition at line 48 of file SampleBlock.cpp.

{
   auto result = DoCreateFromXML(srcformat, attrs);
   if (!result)
      THROW_INCONSISTENCY_EXCEPTION;
   Publisher<SampleBlockCreateMessage>::Publish({});
   return result;
}

References DoCreateFromXML(), Observer::Publisher< SampleBlockCreateMessage >::Publish(), and THROW_INCONSISTENCY_EXCEPTION.

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CreateSilent()

SampleBlockPtr SampleBlockFactory::CreateSilent	(	size_t	numsamples,
		sampleFormat	srcformat
	)

Definition at line 37 of file SampleBlock.cpp.

{
   auto result = DoCreateSilent(numsamples, srcformat);
   if (!result)
      THROW_INCONSISTENCY_EXCEPTION;
   Publisher<SampleBlockCreateMessage>::Publish({});
   return result;
}

References DoCreateSilent(), Observer::Publisher< SampleBlockCreateMessage >::Publish(), and THROW_INCONSISTENCY_EXCEPTION.

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DoCreate()

virtual SampleBlockPtr SampleBlockFactory::DoCreate ( constSamplePtr  src, size_t  numsamples, sampleFormat  srcformat  )

protectedpure virtual

Implemented in SqliteSampleBlockFactory, and MockSampleBlockFactory.

Referenced by Create().

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DoCreateFromId()

virtual SampleBlockPtr SampleBlockFactory::DoCreateFromId ( sampleFormat  srcformat, SampleBlockID  id  )

protectedpure virtual

Implemented in SqliteSampleBlockFactory, and MockSampleBlockFactory.

Referenced by CreateFromId().

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DoCreateFromXML()

virtual SampleBlockPtr SampleBlockFactory::DoCreateFromXML ( sampleFormat  srcformat, const AttributesList &  attrs  )

protectedpure virtual

Implemented in SqliteSampleBlockFactory, and MockSampleBlockFactory.

Referenced by CreateFromXML().

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DoCreateSilent()

virtual SampleBlockPtr SampleBlockFactory::DoCreateSilent ( size_t  numsamples, sampleFormat  srcformat  )

protectedpure virtual

Implemented in SqliteSampleBlockFactory, and MockSampleBlockFactory.

Referenced by CreateSilent().

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GetActiveBlockIDs()

virtual SampleBlockIDs SampleBlockFactory::GetActiveBlockIDs ( )

pure virtual

Returns

ids of all sample blocks created by this factory and still extant

Implemented in SqliteSampleBlockFactory, and MockSampleBlockFactory.

New()

SampleBlockFactoryPtr SampleBlockFactory::New ( AudacityProject &  project )

static

Definition at line 16 of file SampleBlock.cpp.

{
   auto &factory = Factory::Get();
   if ( ! factory )
      THROW_INCONSISTENCY_EXCEPTION;
   return factory( project );
}

References factory, GlobalVariable< Factory, const std::function< SampleBlockFactoryPtr(AudacityProject &) >, nullptr, Options... >::Get(), project, and THROW_INCONSISTENCY_EXCEPTION.

Referenced by BenchmarkDialog::OnRun().

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The documentation for this class was generated from the following files:

• SampleBlock.h
• SampleBlock.cpp